Dynamic Worldwide Name; Background; Enabling Dwwn - StorageTek L700 Service Manual

Operator Panel Entry
1. Press the arrow button until the cursor underscores SVR Secondary.
2. On the editing screen:
a. Press the up and down arrow buttons to select a value for each number in the
b. Press the
c. Press the
3. Press the
desired setting to save the changes. (You may press the
most field to abort.)
If you are planning to exit the Main Configuration Menu at this time, you must press
the
next section.
If you have not changed the library's DNS configuration and are not setting other
configuration values, press the

Dynamic Worldwide Name

Dynamic Worldwide Name is a feature added into Version 3.02 firmware.

Background

To correct re-configuration problems within a customer's Fibre Channel network, 3.02
firmware includes the dynamic Worldwide Name (dWWN) enhancement. Previously,
Fibre Channel devices contained fixed Worldwide names within the network. If a device
(for example, a defective tape drive) required replacement, the new device was detected
by the network as "unknown" and re-configuration of the network was required.
When enabled, dWWN assigns names to library drive slots rather than devices. When a
drive is replaced, the new drive receives the same name as the one replaced, thereby
eliminating the need for system re-configuration There are three Worldwide Names
reserved for each drive: Node, Port A, and Port B.
Note: This feature requires corresponding drive code that supports the dynamic

Enabling dWWN

The dWWN feature (default set to OFF) is enabled through the CLI interface and, once
enabled, the library must be IPL'd.
2-36
secondary domain server's IP address.
button to move right to the next field.
SELECT
button to move left to the previous field.Press the
MENU
button. An editing screen appears.
button from the right-most field when the screen displays your
SELECT
button. If you wish to set other configuration values, continue with the
RESET
Worldwide Name feature as well. Currently, IBM LTO drive microcode 27Q1 is
the only available supporting code.
Microcode for other drives is in process and will be released with the next drive
firmware versions.
Fourteenth Edition
StorageTek Proprietary
MENU
button until you exit all menus.
MENU
SELECT
button from the left-
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